Automatic gas-lighter.



No. 770,267. PATENTED SEPT. 20, 1904. F. M. DARSI.

AUTOMATIC GAS LIGHTER. APPLICATION FILED APR. 4. 1904.

no MODEL.

Fig. 2

IINTTED STATES Patented September 20, 1904.

FORTUNATO MARCIANO DARSI, OF NEWV YORK, N. Y.

. AUTOMATIC GAS-LIGHTER.

SPECIFICATION forming part of Letters Patent No. 770,267, dated.September 20, 1904.

Application filed April 4., 1904.

To all who'nt it may concern.-

Be it known that I, FORTUNATO MARCIANO DARsI, a subject of the King ofItaly, residing at New York, in the county and State of New York, haveinvented certain new and'useful Improvements in Automatic Gas-Lighters,of which the following is a specification, reference being had to thedrawings accompanying and forming part of the same,

My invention relates in general to that type of self-lighting burners inwhich a pilotflame ignites the gas issuing from the main burner, butmore particularly to means for extinguishing the pilot-flame after themain therefrom.

burner has been lighted. A common way of effecting this is by means of aspecially-constructed valve which admits gas to the main burner and uponfurther movement cuts off the pilot supply. In my burner the pilot islighted prior to the main burner by a catalytic suitably arranged in thepath of the gas issuing from the pilot-burner. The means which I providefor extinguishing the pilot-flame consists of a thermostatic devicearranged adjacent to the main burner, so as to'be'heated The consequentexpansion of the thermostat operates to close the passage leading fromthe gas-supply pipe to the pilotburner, thereby cutting off the gas fromthe latter.

The invention itself, which consists of the novel features, combinationsof elements, and arrangements of parts hereinafter described, and moreparticularly set forth in the claims, is typically embodied in thestructure illustrated in the accompanying drawings, in which- Figure 1is a sectional view showing the arrangement of the operative elements.Fig. 2 is a section at right angles to Fig. 1 on the line II, looking inthe direction of the arrow. Fig. 3 is a plan view of the device, andFig. 4: a detail of the device employed for closing the pilot-passage.

The parts are mounted on a suitable base 1, which may be connected witha gas-supply pipe 2. A passage 3 communicates with any suitable mainburner, as the bat-wing type 4. A pilot-passage 5 communicates with apilot burner 6, so that if the pilot be lighted its Serial No. 201,473.(No model.)

flame will ignite the gas issuing from the main burner. In the presentembodiment as means for igniting the pilot I provide a carrier having apair of arms 7, each supporting a mass of catalytic material, as 8,sufficiently in the path of the gas from the pilot-burner to lgnite thesame in the well-known way. A shield 9 may be provided to protect thecatalytic masses, if desired.

At a convenient position on the base, preferably on the side oppositethe pilot, is a tube 10, closed at its top and containing another tube11, the former serving to protect the latter from oxidation, At itslower end the inner tube communicates with a bag or pouch 12, offlexible material, as soft rubber, arranged in an opening in the baseadjacent to and in communication with the pilot-passage 5. The twocontain an expansible fluid, such as mercury.

From the foregoing the operation of the device will be easilyunderstood. Upon admitting gas to the pipe 2 it will issue from thepilot-burner and be ignited by the catalytic masses 8 8. The pilot-flamereaches up to the main burner and ignites the gas issuing therefrom. Thelatter immediately heats the tubes 10 and 11, expanding the fluid in thelatter, thereby causing the flexible bag 12 to be expanded-into thepilot-passage 5, closing the inlet 13. thereof. The gas being thus cutoff from the pilot-burner the pilot-flame is extinguished, but leavingthe main burner in operation. So long as the main flame is burning theextinguishing-tubes 1O 11 will be kept heated and the pilot passageclosed; but upon cutting ofi the gas from the main burner the tubes willcool, causing the expanded fluid to contract, thereby opening thepilot-passage and restoring the device to its first condition.

The embodiment described above I consider the most convenient, but thesame may be varied without departing from the proper scope of myinvention.

What I claim is c 1. The combination with a base; a main burner; agas-supply pipe in communication with the main burner; and apilot-burner, said base having a passage connecting the gassupply pipewith the pilot-burner; of a tube mounted on the base and extending intoproximity to the main burner; a flexible bag on one end of the tube,arranged in an opening in the base communicating with the passage to thepilot-burner; and an expansible fluid in the tubeand bag, whereby theheat of the main burner will cause the bag to expand and cut off thesupply of gas to the pilot-burner, as set forth.

2. The combination with a base; a main burner; a gas-supply pipe incommunication with the main burner; and. a pilot-burner, said basehaving a passage connecting the gassupply pipe with the pilot-burner; ofa tube mounted on the base and extending into proximity to the mainburner; a protecting-tube inclosing the first-mentioned tube; a flexiblebag communicating with the inner tube, arranged in an opening in thebase communicating with the passage to the pilot-burner; and anexpansible fluid in the tube and bag, whereby the heat of the mainburner will cause the bag to expand and cut oil the supply of gas to thepilot-burner, as set forth.

3. The combination with a base; a main burner; a gas-supply pipe incommunication with the main burner; a pilot-burner, said base having apassage connecting the gas-supply pipe with the pilot-burner; and a massof catalytic material arranged in the path of the gas issuing from thepilot-burner; of a tube mounted on the base and extending into proximityto the main burner; a flexible bag on one end of the tube, arranged inan opening in the base communicating with the passage to thepilot-burner; and an expansible fluid in the tube and bag, whereby theheat of the main burner will cause the bag to expand and cut off thesupply of gas to the pilot-burner, as set forth.

FORTUNATO MARCIANO DARSI.

Witnesses:

M. LAWSON DYER, S. S. DUNHAM.

